216407712611 has 4 divisors (see below), whose sum is σ = 216519784824. Its totient is φ = 216295640400.

The previous prime is 216407712601. The next prime is 216407712643. The reversal of 216407712611 is 116217704612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216407712611 - 2²² = 216403518307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216407712601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56033210 + ... + 56037071.

It is an arithmetic number, because the mean of its divisors is an integer number (54129946206).

Almost surely, 2^216407712611 is an apocalyptic number.

216407712611 is a deficient number, since it is larger than the sum of its proper divisors (112072213).

216407712611 is a wasteful number, since it uses less digits than its factorization.

216407712611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112072212.

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 216407712611 in words is "two hundred sixteen billion, four hundred seven million, seven hundred twelve thousand, six hundred eleven".